I don't know if you have noticed but it seems that the craft foam I've been using doesn't absorb the inks from the marking pens to readily, so I decided to use that to my advantage.
This was a yellow foam body, I took an olive permenent marker and colored the upper half. Then took a rag and rubbed the marker in to belnd it into the yellow and soften the color transition. Reapply the olive to the top 1/4 abd blend that, gradually darkening towards the top. Final application of black right along the spine and a quick blend, that's it aside from a thin coat of epoxy ( I tried the Devcon 20 minute version gently heated to flow and 'painted' it on with the side of a bodkin. Tried to get just enough to get it glossy at minimum thickness.
I need to stock up on some othe marker colors to use with the white foam, I think you could come up with some real nice blended colors.
I bought some of the "Contac" brand holographic paper at Michaels on Sunday but haven't had the chance to test it. The other source was mail order. Waiting for the UPS guy to see what the quality is like. $4.99 for 5 sheets but they had a nice selection of holographic colors/patterns.

Along that Same Line, Jo-Annes has Glo-in-Dark glitter. Basically, you can add it to anything that you can put a coat of hard head on. Also, I've mixed it right in with Epoxy. The problem is you have to remeber to put the flies under a bright light for quite a while before you fish them. Flies stored in a Dark Fly Box will Not be "charged Up" & ready to Fish!

BOB.I see your at it again, next time you come buy Ihave a 16" segmented floating chartruce eel or you to see. W/ marabou tail. I realy must get a digital camera.A.S.A.P. "GOOD LUCK GOOD TYIN) in your case
GOOD HAMMERING!:hehe:

I received that order of holographic papers today. The quality is good, the 'stock' is not as heavy as the WTP materials commonly sold through the tackle and fly shops but the colors and finishes are nice. Full size 8-1/2 x 11 pieces (approx) and it's $ 4.69 for 5 sheets.